(Detroit, MI)  --  The man who shot four police officers at the Detroit Police Department's Northwestern District on Sunday has been identified as 38-year-old Lamar Moore.  Detroit Police Chief Ralph Godbee Jr. says the officers who returned fire and killed Moore were heroes.  Two officers, Commander Brian Davis and Officer David Anderson, remain in stable condition at Sinai-Grace Hospital.  Two others were treated and released.  Godbee said they do not know of a motive.